Cinnabar is mostly taken in pills and powder, and should not be used in decoctions, and is used externally in appropriate amounts. Cinnabar belongs to the tranquilizer medicine in the heavy town tranquilizer (with mineral, shellfish drugs to stabilize the mind) medicine. Cinnabar belongs to the sulfide mineral cinnabar, mainly containing mercuric sulfide. Cinnabar into the heart meridian. Cinnabar is sweet and cold in nature. Cinnabar can be used internally and externally. Cinnabar has the efficacy of clearing the heart, calming the mind, tranquilizing the spirit, brightening the eyes, and detoxifying the toxin. It is used in the treatment of insomnia and dreaminess, pediatric convulsions (pediatric diseases mainly manifested by dizziness, apoplexy and convulsions), restlessness, mouth sores, palpitations (rapid heartbeat, often accompanied by panic), easy to be frightened, blurred vision, laryngeal paralysis (redness, swelling and pain in the pharynx, dryness, foreign body sensation, or itchy discomfort in the pharynx and difficulty in swallowing), epilepsy and frenzy, and ulcers, swellings and poisons, etc. It is toxic and should not be taken for a long period of time. Cinnabar is toxic and should not be taken for a long time or in large quantities. It is forbidden for pregnant women and those with liver or kidney insufficiency. The adverse reactions of Cinnabar are not clear at the moment. If needed, please use it under the guidance of a professional Chinese medicine practitioner.